Peachy Keen Margarita

Rim glass using a little syrup from a jar of cling peaches and some coarse salt. Add cubes, tequila, Cointreau and lime juice to a cocktail shaker. Shake until cubes are dissolved. Strain into rimmed glass. Garnish with a peach slice. Can't find fresh peaches? Use one from those cling peaches OR try garnishing with a few peach gummy rings for a sweet pop of nostalgic fun.